Case 1. 5 kg on right of the pivot, 10 kg on left of the pivot cw = ccw = = cw + ccw = Case 2. 5 kg & 10 kg on right of the pivot, 15 kg on left of the pivot cw = ccw = = cw + ccw =

2 Case 3. 5 kg & 20 kg on right of the pivot, 10 kg & 15 kg on left of the pivot cw = ccw = = cw + ccw = Case 4. 5 kg, 10 kg & 15 kg on right of the pivot, 20 kg on left of the pivot cw = ccw = = cw + ccw = Case 5. 5 kg , 15 kg & 20 kg on right of the pivot, 10 & 15 kg on left of the pivot cw = ccw = = cw + ccw = PART 2: Finding unknown masses Choose "Balance Lab" tab. Select the following options in right corner of the screen: Mass Labels, Level, Rulers In the "Bricks" section on the right of the screen, click on the right arrow. Keep on clicking to the right until you see "Mystery Objects". Find out the mass of each of the Mystery Objects "E", "F", "G" and "H" by balancing each of these against the bricks of known masses. For each Mystery Object, paste a screenshot of balanced seesaw and show all calculation steps.